tuber


tuber
tuber1
tuberless, adj.tuberoid, adj.
/tooh"beuhr, tyooh"-/, n.
1. Bot. a fleshy, usually oblong or rounded thickening or outgrowth, as the potato, of a subterranean stem or shoot, bearing minute scalelike leaves with buds or eyes in their axils from which new plants may arise.
2. Anat. a rounded swelling or protuberance; a tuberosity; a tubercle.
[1660-70; < L tuber bump, swelling. Compare truffle]
tuber2
/tooh"beuhr, tyooh"-/, n.
1. a person or thing that forms, installs, or operates with tubes.
2. Also called inner-tuber. a person who participates in the sport of tubing.
[1920-25; TUBE + -ER1]

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Short, thickened, mostly underground stem that constitutes the resting stage of certain seed plants.

It is often an organ of food storage, reproduction, or both. It bears minute scale leaves, each with a bud that has the potential for developing into a new plant. The common potato is a typical tuber; the much-reduced leaves and associated buds form its "eyes." The term is also used imprecisely but widely for fleshy roots or rhizomes that resemble tubers (e.g., the "tuber" of the dahlia, actually a tuberous root).

* * *

▪ part of plant
      short, thickened, mostly underground stem that constitutes the resting stage of certain seed plants. It bears minute scale leaves, each with a bud that has the potential for developing into a new plant. The potato is a typical tuber, as is the Jerusalem artichoke. The term is also used imprecisely but widely for fleshy roots or rhizomes of other plants that resemble tubers—e.g., the “tuber” (actually a tuberous root) of a dahlia.

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Universalium. 2010.

Look at other dictionaries:

  • tuber — [ tybe ] v. tr. <conjug. : 1> • fer tubé 1489; repris 1842; de tube ♦ Techn. Garnir de tubes (un trou de sonde). ♢ Poser des tubes d acier vissés les uns à la suite des autres au moyen de filetages coniques, lors du forage de (un puits de… …   Encyclopédie Universelle

  • tuber — TÚBER s.m. (anat.) Porţiune îngroşată a unui organ. [< it. tubero, lat. tuber – umflătură]. Trimis de LauraGellner, 23.10.2005. Sursa: DN  TÚBER1 s. m. 1. (anat.) porţiune îngroşată a unui organ. 2. tubercul1 (1). (< it. tubero …   Dicționar Român

  • TUBER — a Graeco τύφαρ, quod est, τύφος, seu ἔπαρσις, tumor, non dicitur nisi de rotundo et globoso, et proprie quidem notat tumorem vel abscessum corporis, qui in rotundum erumpit, Graecis φῦμα, φλύκταινα, ὐπόςτημα, τύλος. Inde ad fetum illum terrae… …   Hofmann J. Lexicon universale

  • tuber — (n.) thick underground stem, 1660s, from L. tuber lump, bump, perhaps related to tumere to swell (see THIGH (Cf. thigh)) …   Etymology dictionary

  • tuber — túber m DEFINICIJA 1. bot. a. v. gomolj b. v. tartuf 2. a. anat. velika kvrga koja nastaje na mjestu gdje se jedan mišić ili više snažnih mišića hvataju tetivnim nitima za kost b. pat. upalni čvorić koji se raspada i ostavlja ožiljak ETIMOLOGIJA… …   Hrvatski jezični portal

  • tuber — tuber; para·tuber·culous; …   English syllables

  • tuber — [to͞o′bər, tyo͞o′bər] n. [L, lit., a swelling, knob, truffle < IE * teubh < base * tēu , to swell > THUMB, L tumere, to swell] 1. a short, thickened, fleshy part of an underground stem, as a potato: new plants develop from the buds, or… …   English World dictionary

  • Tuber — Tu ber, n.[L., a hump. knob; probably akin to tumere to swell. Cf. {Tumid}.] 1. (Bot.) (a) A fleshy, rounded stem or root, usually containing starchy matter, as the potato or arrowroot; a thickened root stock. See Illust. of {Tuberous}. (b) A… …   The Collaborative International Dictionary of English

  • Tuber [1] — Tuber, 1) (Bot.), Knollen; 2) (Tuberositas, Protuberantia, Tuberculum), rauhe, meist Muskeln zur Anlage dienende Erhöhung einzelner Stellen eines Knochens …   Pierer's Universal-Lexikon

  • Tuber [2] — Tuber (T. Mich.), Pilzgattung aus der Familie der Gasteromycetes Tuberacei Tuberei. Merkwürdige Arten: T. cibarium (Leckertrüffel), s. Trüffel; T. albidum Fr. (Weiße Trüffel), kleiner, weniger geschmack u. geruchvoll als die Leckertrüffel, außen… …   Pierer's Universal-Lexikon

  • Tuber — (lat.), Höcker; T. frontale, Stirnhöcker. In der Botanik soviel wie Knolle, z. B. T. (Radix) Aconiti, Akonitknolle; T. (Radix) Jalappae, Jalappenknolle; T. (Radix) Salep, Salepknolle; auch Pilzgattung, s. Trüffel …   Meyers Großes Konversations-Lexikon


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